"It's much more difficult than to do something that is showing off, " said principal dancer Roberto Bolle.

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The English National Ballet's artistic director has said missing Ukrainian dancer Sergei Polunin is "in Moscow and is OK", following his sudden departure from a London show.

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"Dancer is not a color, " he said.

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"She'd compare a step to a flower, or take off her necklace and say how all the beads have to be perfectly put together to form the whole (dance) variation, " said Lola Cooper, a Carolina Ballet dancer who studied with Kostritzky at the School of American Ballet.

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Australia , she was a dancer, and she ended up taking off and leaving because she said she needed to find her friends.

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But she said she still had high hopes for his future development as a dancer, if he survives the public vote.

BBC: Calzaghe trails after dance debut